CPU overload when soloing tracks in 10.5 - on Mac Mojave.

Issue: When listening to an audio, instrument, or group in Solo, the CPU overloads and stutters about 60% of the time.

Repro: Enable Solo on any track in a project. About 60% of the time (for me, anyway) CPU will go into major overload with big audio stutters and dropouts. As soon as I disable Solo everything is fine again. It doesn’t matter if the soloed track has plugins on it or not, and it happens regardless of project size.

In C10.0.4 this is never an issue, by way of comparison.

Is anyone else having this issue?